Apparatus for equalizing air-currents.



No. es|,2|5. Patented Aug. 27, 1901;" n. GOLL. I

'APPARATUS F03 EQUALIZING MR CUBRENTS.

(Application filed Dec. 99, 1897.)

(No mm).

I go

i neighborhood of the main conduit will on acj i j J UNITED STATESPATENT OFFICE.

I RICHARD. eoLL ,-oF FRANKFORT-ON-THE-MAIN, GERMANY.

II is APPARATUS FOR EQUALlZING .AIR-CU RRENTS.

- SPECIFICATION forming part of Letters Patent No. 681,215, dated August27, 1901.

Application 516a December 29, 1897. Serial no. eesaso. (No model.)

To all whom it may concern:

Be it known that I, RICHARD GoLL, manufacturer, residing atFrankfo'rt-on-the-Main,

. in the Kingdom of Prussia, German Empire,

have invented new and useful Improvements in Apparatus for EqualizingAir-Currents, (patented in Germany, No. 84,471, dated July 29, 1893; inFrance, No. 248,66l,'dated July 4, 1893; in Austria, No. 46/470, datedJanuary 18, 1896; in Hungary, No. 5,086, dated January 19, 1896; inSwitzerland, No. 12,713, dated January 18, 1896, and in Italy, No.

i 31/ 10,680, dated March 3, 1896,) of which the following is aspecification.

The object ofmy invention is to obviate the drawbacks inherent to theactual systems of distributing the air and to regulate its current whenused for the ventilation of rooms or the supply of furnaces and thelike. The air has always the tendency to go from its entrance into aroom or chamber on the short est way to the point where an opening forthe escape of it is provided, especially if the air enters underpressure or escapes by suction. Even in cases wherein a conduit for theadmission or the escape of the air is divided into different branchesleading to different polnts of one room, this inconvenience is notsufficiently diminished, because the openings of the branch pipes orconduits placed in the count of their shortness and smaller frictionconvey more air than the openings at more bent at different places. Inthis instance the maximum current will follow a line which approaches astraight line as nearly as the obstacles put in the way of it willallow. The

supply of the air to the points distant of this line will be smaller.This is true for the points situated in the immediate neighborhood ofthe grate, where an equal supply of air to all points in the fuel iswanted. I propose to remedy this by shaping the conduits in connectionwith the distant points of a room in a waythat their lengths are equaland attain this by curving or otherwise bending the conduits leading tothenearer points. In cases where the stream of air is not divided intodifferent films or branches 1 provide partition-walls or the like,forming conduits of equal length between themselves. This is especiallythe case if my invention is applied to fire-grates. As the air has thetendency to stream in a straight line from the door of the ash-pit tothe back part of the grate and the edge of the fire-bridge and therefrom obliquely upward to foot of the chimney, I lengthen the ways of theair passing at the back part of the grate, and thereby attain aperfectly equalized draft in the plane of combustion.

In order to show the manner in which I carry my invention out, I haveaffixed drawings.

Figure 1 shows the ventilation of a room; Fig. 2, aconstruction of agrate and flues under a boiler; Fig. 3, another construction for thesame purpose.

Fig. 1 is a plan of the ceiling of a room, wherein conduits for theescape of the air are provided. H is the chimney or main channel leadingthe spent air into the open air. a b c d are openings in the ceilingconnected by pipes A B O D with the channel H, the pipes B A D beingcurved to attain exactly or approximately the length of the pipe 0.

In Fig. 2, A represents the grate; B,the entrance-opening for thecombustion-air in the ash-pit; b, the fire-bridge mand 'n,partitionwalls built to divide and conduct the combustion-gases. Thecurrent of the combustion-gases is split into three branches q r 8,following the arrows 1 2 3. Without the partition-walls the suctionexercised by the chim ney would prove strongest for the part 8 of thegases, and therefore the speed of these gases would be the greatest andtheir quanheld closedand the air admitted by a conduit' Herethe currentof the air is splitin O. the same manner, and the paths leading from themouth 0 of the conduit to the difierent parts of the grate are renderedapproximately equal in length.

Ihe system of ventilation shown in Fig.1 may be especiallyadvantageously applied it the conduits consist of rubber tubes allowingto displace the entrance or discharge openings.

It will be seen that thepassage which leads from the part of the room orchamber farthest from the outlet, as C, Fig. 1, or q, Fig. 2, isstraight, and that the extent of bend of the other passages increaseswith the nearness to.

the outlet of the inlet ends of said passages, thereby equalizing thelengths of the passages. r

Now what I claim, and desire to secure by 20 LettersPatent, is thefollowing:

The combination with a chamber having a suitable outlet through whichair is to be passed from the chamber, of a plurality of passages frompoints at diiferent distances 25 I

